Ceylon smith



(No Model.)

. G. SMITH'.

y .MoLD POR QASTING METAL HUBS. No. 575,995. Patented Jan. 26, 1897.

, UNITED STATES i PATENT- OFFICE.

CEYLON SMITH, OF QUINCY, ILLINOIS, ASSIGNOR TO THE ELECTRIC IVIIEEL y COMPANY, OF SAME PLACE.

MOLD FOR CASTING METAL HUBS.

SPECIFICATION-forming part of Letters Patent No. 575,995, dated January 26, 189'7.v Application iiled April l, 1895. Serial llo. 543,974. (No model.)

To @ZZ whom t may concern:

Be it known that I, CEYLON SMITH, a citizen of the United States,and a resident of Quincy, Adams county, in the State of Illinois, have invented certain new and useful Improvements in Molds for Casting Metal Hubs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this ro specification My invention relates to an improvement in molds used in the art or method of casting the hubs of metal wheels; and my invention consists in features of novelty hereinafter I 5 fully described,and pointed out in the claims.

In the accompanying drawings, Figure I is a sectional view, part in elevation, and illustrates the manner of carrying out my iin-- provement in the art to which my invention zo relates. Fig. II is a transverse section taken online II II, Fig. I. Fig. III is a sectional view illustrating the manner of building up the mold, the lower half of the mold shown thereby being inverted. Fig. IV is a bottom 2 5 view of that shown in'Fig. III, the followboard being omitted. Fig. V is a longitudinal section showing the mold, flask, and patterns complete, with the exception of one (the lower) section of the pattern.

Referring to the drawings, 1 represents the flask, divided at a central line 2, Fig. V, the two parts 1 1b being connected at this point by suitable tie bolts (not shown) passed through perforated ears 3, Fig. II.

4. represents the upper portion, and 4 the lowerportion, respectively, of the body of the mold, which is made of green sand.

5 represents the outer dry-sand core that forms the band on the small end of the hub.

6 represents the inner dry-sand core that forms the band on the large end of the hub.

7 represents the central pattern for forming the recess or chamber in the mold for producing the central ring or bead on the hub.

8 represents the upper upwardly-tapering pattern for forming the upper chamber in the mold which produces the part of the hub between the central ring or bead and the outer band of the hub.

9 represents the lower upwardly-tapering pattern for forming the lower chamber in the mold that produces the part of the hub between the central ring or bead and the inner band of the hub.

, 10 represents the outer pattern for forming 5 5 the outer chamber in the mold that receives the dry-sand core 5.

1l represents the inner pattern that forms the inner chamber in the mold to receive the dry-sand core 6.

12 represents central dowel-pins by` which the patterns 7, 8, 9, 10, andll are heldin position while the mold is being formed, and 13 represents the central upward ly-tapering drysand core that forms the central upwardlytapering cavity of the hub when the metal is poured.

14 represents the finished hub, and 15 the spokes, the hub having spoke-sockets 14.

16 represents the band at the small or outer 7o end of the hub, and 17 the band at the large or inner end of the hub. 1

In getting ready to make acasting under my improvement I first place the central pattern 7 on the follow-board 18, Fig. III, the 75 board being recessed to receive the lower half of the pattern, and I place the lower half 1n of the -iask 1 in an inverted position on said follow-board. (See Fig. III.) The lower pattern A9 is then put in place with a dowel-pin 8o connection 12 between it and the followboard,and the green sand is rammed in around the lower pattern until the ask is filled up to the top of the lower pattern. The inner pattern 11 is then inserted and green sand 85 rammed in up to the shoulder 19 of the inner pattern. The patterns 9 and 11 are` next withdrawn and the inner dry-sand core 6 is dropped into place, and thebottoln 2O of the Iiask is applied on top of the core 6 and se- 9o cured'in position by means of clamp-bolts 21, projecting from lugsvZO on the bottom 2O and entering perforated lugs 1c on the lower section l of the liask and secured by keys 22. The lower section 1a of the iiask, containing 95 the green-sand mold and the dry-sand core 6,

is now lifted, with the central pattern 7, up off of the follow-board 1S and inverted, with the bottom 2O resting on the casting-floor. The next step is to put on the upper half ,1b loo of the flask, as shown in Fig. V, and to apply the upper pattern 8. Green sand is now rammed in around the upper pattern 8 and up to the top of the upper pattern, when the outer pattern 10 is applied, and green sand is then rammed in up to the top of the outer pattern 10 and forced into the groove 10"L of the outer pattern. IVhen this has been done, the outer pattern 10 is removed and the upper half lb of the iiask, with its part of the mold, is removed, which permits the removal of the central pattern '7 and the withdrawal of the upper pattern 8. The central drysand core 125 is now inserted. Then the spokes are placed in position in the prints formed by the central pattern 7, and then the upper half l" of the flask is replaced and the outer dry sand core 5 is placed in position, as shown in Fig. I. The mold is now in condition to receive the molten metal, which may be poured through a gate 23, (see Fig. L) and the entire hub is cast complete, the bands on the ends of the hub being formed by the drysand cores 5 and 6, thus avoiding the necessity of shrinking bands on the hub, and by making the body of the mold of green sand there is less liability of the hub cracking or checking before the mold is shaken out, for the reason that the lateral projections on the hub, that is to say, the central ring and the bands 16 and 17, are surrounded by green sand, which is more elastic and yielding than a dry-sand mold would be.

By this method of molding hubs a two-part flask is used, whereas by the old method a four-part flask was necessary, and thus a large saving in floor-space and labor is obtained.

I claim as my invention- 1. A vertical mold comprising the flask 1 having a lower section 1f, and an upper section 1b, the bottom 20, the inner pattern 11, having a shoulder 19, the lower upwardlytapering pattern 9, the central pattern '7, the upper upwardly-tapering pattern 8, the outer pattern 10 formed with groove 10 and the centering dowel-pins 12 substantially as described.

2. A vertical mold comprising the flask 1 having a lower section 1fL formed with lugs 1c and an upper section 1b, the bottom 20, formed with lugs 20a, the inner sand core G, the spokes 15, the green-sand body having a lower portion 4a and an upper portion 4, the upwardlytapering central sand core 13, and the outer sand core 5; substantially as described.

CEYLON SMITH.

In presence of- E. A. HENDERSON, L. E. EMMoNs, Jr. 

